The finale delivers a dual reveal. is the mastermind behind the "A" persona, but he didn't act alone. The physical brute stalking the girls is his son, Archie Waters .
Clanton gathers the mothers at the school to force a confession. Pretty Little Liars: Original Sin S01E10 FINAL ...
Imogen gives birth to a healthy girl and decides to let Aria Montgomery and Ezra Fitz (a nod to the original series) adopt her. The finale delivers a dual reveal